This is actually my third make of this. The first was the larger prototype for the stock extruder. The second was the redesign for the stock extruder. Finally I have printed the DD mount for my Anycubic titan clone. I'm using a 25mm pancake stepper.
It can be a task to install but the results work well. My Anycubic titan clone seems to be a few mm taller causing a slant in the bowden tube.
I had to hack off the cable management off my hero mount to fit the extruder.